Sewing and binding machine



Nov. 13, 1945.

0 R. HAAS SEWING AND BINDING MACHINE Filed NOV. 15, 1945 4 Sheets-Sheet1 NOV. 13, 1945. j v Q R HAAS 2,388,739

SEWI NG AND BINDING MACHINE Filed Nov. 15, 1945 4 Sheets-Sheet 2 wasNov. 13, 1945. 'o. RfHAAS 2,388,739 v SEWING AND BINDING MACHINE FiledNov. 15, 1943 4 Sheec-Sheet s I III 0. R. HAAS SEWING AND BINDINGMACHINE 4 Sheets-Sheet 4 Fil ed Nov Patented Nov. 13, 1945 S NG'A DBINDING M H NE Otto R. Haas, Beverly, Mass., assignor to United ShoeMachinery Corporation, Flemington; N. .L, a corporation of New Jersey Aplica ion Nevemher 15, 1943, Ser l. No- 519 27 21 Claims.

T e t h eh ieh re at s to c i e or sewing binding strips to the cornersof light Wi ht bags and suitcases and more particularly to 1111-movements in bag corner binding machines of the type disclosed in UnitedStates Letters Patent No. 1,751,123,, granted March 18, 1930, upon anap: plication filed in the names of Arthur Bates and Fred Ricks, No1,707,571, granted April ,2, 1929., upon an application filed in thenames of Fred Ricks and Reginald B, Woodcock, and No. 1,695,- 718,granted e m e 8, 192 u h a ppli ation filed in the names f Fred Ricksand Robert G. Reid.

Mo e li ht wei ht bees o suitcases, ceme l d gn ed as air l ne lu a e,freq h 1y re const u ted with a euhdetie frame o hin ene e ly d rotectd. i h can as r othe the o r ce ove ng In ord t re a n" h nhe nt re gthQt he f ndat n frame and of the protecting coverings to their fullestde: gree in a finished bag, sharp corners and joints'in the frame areavoided so fa as possible} Corn: monly, the frame is composed of mainbody and er b ea h ha ing a s de un termed m a in h e of m ter l benalone, the pr p l s g e s a o he hotly or cove member, the nd l o ach.ide n be n co nected by joinin Separate pieces with the unit. The u redges at e c rners u l nihe eac nd. piece are rounded with a suitablecurvature to oid we k s nherent. in e con uc o avng harp co n r and he onded corne s are u d i h e strip o ei icrein ea h r er other t h m heberhine mate ial; To avo d r ckin o eake ng the sheets makin iii? h sidenits u g bendi and to edu in h fa o er whi h'is net rein or ed time theb n e he S de unit the be ds. i each side unit are made with a curvatureof 8; radius relae i l l rge as compared to that e he nior e acutelyrounded and corners, r

One method of attaching binding strips to the foundation frame consistssewing a seam along one edge of the binding slgri at a time. one edge ofthe strip is first sewed o th side unit along he ner a th rema nin una tched ed e of the strip s the bent wi thwise a ound h corners at the endof the frame, With the unate h e e f t e strip ben a oun he corners d tm o i y a ach d or held. Wi a-0Q, econd seam with stitches-1 3 .5 1,;through the end p e is h n in er ed, "I'he ur o e in w n th strip n his.way with two s arate seams is to ena le th ullness h trip rmed at thJunction o th en corners a d the ends n the side sheet to be distributedevenly and smoothed out, thus preventing an unsightly appearance andavoiding structural weaknesses in the bindin strip. In some instancesthe binding strip has heretofore been severed completely at the junctionof the corners to avoid the problem of distributing the fullness, or thebinding strip is notched to take out the fullness. With these hods of ra m nt i s om n c ce o protect and reinforce the severed ends or theweakened edges at the notches in the binding strip with three-sidedmetal or plastic caps, h Objects oi e r ent i ent n re o etat the ap l ction e e b ndi g Strip to a bag or suitcase corner and to, provide asewing machine of the same general type as that disclosed in the Ricksand Reid patent, in which the binding strip ma e p ed an s we w th asingle seam to the corners of a bag or suitcase by a continuousoperation in which there is no necesr sity for severing, notching orotherwise fitting the binding strip at the junctions between, the endcorners and side bends of a bag or suitcase to which the binding stripis being attached.

Another object of the invention is to improve the operation of a bagsewing machine for fitting a binding strip to a corner simultaneouslywith a sewing operation in such a way that the strip may be drawn intosnug conformity with a corner of the bag in a continuous unbroken lengthwithout causing the edges of the strip to pucker excessively orotherwise to produce an unsightly ap pearance along an area whereexcessive fullness occurs and particularly along the junction of acorner with a bend in the side unit of the has.

A st l further O je t s to provide i t c r er binding strip attachingmachine in which the fullness created by curvature along a corneroperated upon is distributed evenly throughout the bent over edge of thebinding strip thus producing a flat substantially uncreased surfacecorresponding to that resulting from a high-quality hand fittingoperation.

A further and more general object is to improve the constructionandinode of operation of a bag corner sewing machine whether for use inattaching bag corner binding strips or for other operations.

h ma h ne n whic he ese t invention i o i d is a ran d with a orkSupport ha n h ula y dis d su fa s f en a i c ht c rn feces o a b e framor e like t c e, hile in ertin stitch s r o m n he angular relation tothe frame corner, in which means are provided for distributing thefullness in one edge of the binding strip evenly while the other edge isbeing carried around a bend in the side unit of the bag frame so thatthe binding strip may be led in a substantially straight path through aguide toward the sewing point, the fullness being distributed withoutthe necessity of stopping the operations. Thus, it is unnecessary toattach one edge of the strip at a time, to stop the machine during theoperation or to weaken the strip by cutting, and the application of thestrip and its attachment to the corner may be accomplished in a singlecontinuous operation, either with a single seam or otherwise.Preferably, the fullness distributing means is so arranged as to collecta small measured amount of fullness in the edge of the binding stripduring the formation of each stitch or other step-by-step securingoperationand, where the curvature of. the bend in the side unit of thebag is o-f sufiicient radius, the small amount of fullness collected foreach stitch is readily flattened during the operation, thus producing afinished appearance without weakening the binding strip.

Further features of the invention relate to novel and improved worksupporting and clamping members, to a binding strip guiding and clampingdevice of simplified and improved construction, and to other devices,combinations and arrangements of parts hereinafter described .in thefollowing specification and claims taken in connection with theaccompanying drawings, in which Fig. 1 is a view in side elevation andpartly in section, showing so much of a curved needle lockstitch sewingmachine as is necessary to illustrate the present invention togetherwith a portion of a bag or suitcase being sewn; I

Fig. 2 is a view in front elevation of a portion of the internal worksupporting horn actuating mechanism of the machine shown in Fig. 1;

Fig. 3 is a plan viewv of a portion of the horn supporting and actuatingmechanism illustrated in Figs. 1 and 2;

Fig. 4 is a sectional view taken on the line IV-IV of Fig. 1;

Fig. 5 is a detail view, on an enlarged scale, of the external worksupport and the binding strip guide of the machine, looking in thedirection of the arrow in Fig. 1;

Fig. 6 is another detail view of the external work support and thebinding strip guide, on the same scale, taken at right angles to thearrow in Fig. 1; s

Fig. 7 is a side sectional view, on an enlarged scale, of the externaland internal work support-v ing members of the machine, looking from theright side;

Fig. 8 is a sectional detail view, taken along the line VIII-VIII ofFig. 7;

Fig. 9 is a sectional view taken along the plane of the needle operatingpath, looking from the left side of the machine;

Fig. 10 is a similar sectional view, illustrating the manner in whichthe fullness of the binding strip is accumulated while the strip isbeing carried about a bend in the side unit of a bag or suitcase;

Fig. 1-1 is a perspective view of a bag after being sewn on the machineof the present invention;

Fig. 12 is a view in perspective, on an enlarged scale, indicating themanner in which the frame member of a bag is presented to the machine ofthe invention at the .beginning of an operation; I

Fig. 13 is a further perspective view, illust ating the construction ofa bag frame member after being partially sewn and the manner in whichthe stitches are inserted; and

Fig. 14 is a sectional detail view, illustrating the operation of theinternal work support at the beginning of an operation upon a bag framemember.

The illustrated sewing machine is a lockstitch curved needle machinehaving a construction and mode of operation substantially the same asdisclosed in United States Letters Patent No. 1,169,909, grantedFebruary 1, 1916, upon an application filed in the name of FredAshworth. Instead of flat work clamping devices, the illustrated machineis provided with a work support 2 for the corner of a bag, or suitcase,with adjacent external faces of the bag member engaging surfaces on thework support disposed at an angle of to each other. To clamp the bagmember in position on thework support, the machine is provided with'acurved bag entering horn 4 acting at its lower end internally of the bagframe to compress the parts of the bag member being sewn together andhaving a mounting at its upper end actuated intermittently to releasethe bag member from clamping pressure between stitches so that themember may be fed as the sewing operation progresses. The machine alsois provided with a curved hook needle 6, a work penetrating and feedingawl 1, a thread finger B, a looper 9, a take-up l0 and other stitchforming devices similar to those disclosed in the Ashworth patentreferred to. v

The machine of the Bates et al. patent is constructed and arranged toguide and sew simultaneously both edges of a binding strip to the cornerof a heavy sole leather bag, or suitcase, such as is illustrated in Fig.11, with a single lockstitch seam. The work operated upon in the Bateset a1. machine consists of angularly disposed faces of a bag, supportedatan inclination to and intersecting the needle and awl paths at thesewing point While the binding strip is being attached. Satisfactorysewing has thus been suc' cessfully accomplished heretofore whilefolding a binding strip about a straight corner of a bag or suitacaseWhere the main frame of the bag is composed of heavy leather or even ofwood, the stitch forming devices acting on wood in much the same manneras on heavy, leather.

In Fig. 11, there is illustrated a bag, or suitcase, composed of afoundation frame comprising a main body member l2 and a cover member l4,each having a plywood side unit I 6 bent from a single sheet alon thelines 18 and 20, respectively, with a relatively gradual curvature atright angles into the top 22 and bottom 24 of the frame member (seeFigs. 12 and 13). Joined rigidly to each bent side unit are wooden endpieces 26 completing each frame member of the bag. The outer faces ofthe side unit and end pieces are protected by a canvas covering,indicated at 28, cemented to th faces of the side unit and end pieceswith the edges of the covering substantially registering with the edgesof the frame member to which they are cemented. As a protective bindingfor the edges of the covering and the jointed corners between the sideunit and end pieces, there is sewed with a single seam along eachendoutlining corner a leather strip 30 formed to fit the jointedcorners. The strip is laid along the side unit and bent widthwise overthe corner into intimate contact with the adjacent end piece. Thestitches pass entirely through the corner diagonally and do not breakthrough into the inside of the frame member. To complete the bag, themain body and cover members are fitted with hinges and other suitablehardware of the usual construction, the ends of the binding strip beingsecured by suitable reinforcing rivets 3|.

In sewing the binding strips to the jointed end corners of each bagmember, a corner is presented to the illustrated sewing machine with theouter faces at the corner intersecting the path of the curved needle 6and the point of the needle entry located substantially symmetrically ona corner with relation to the point of exit. In order to faciltateapplication of the binding strip to the end corners, the corners arerounded with a relatively acute curvature of sufficiently short radiusto present an impact resistant outer surface without weakening to anysubstantial degree the joint between the side unit and the end pieces.

The binding strip 30 is directed in central relation to a corner withboth angularly disposed edges intersecting the needle path. To bend thestrip widthwise and direct it porperly, it is led through a suitableguide for supporting the strip within the corner formed by theconverging surfaces 32 and 34 on the work support 2, as will be morefully described hereinafter. In order to compress the strip into tightlyfitting conformity with the jointed bag corners during sewing, the worksupport 2 is provided between the surfaces 32 and 34 with a curvaturesubstantially corresponding to that of the corners operated upon.

To enable the seam to follow the bend of the side unit after completinga straight portion of a corner along an end piece, it is necessary toturn the bag frame member on the lower surface 32 of the work support atright angles to its original position. The turning movement must beregulated by the speed of sewing and the degree of curvature in the bendof the side unit which forms a junction with the jointed corneroutlining an end piece 26. In turning the bag frame member on the worksupport, the side engaging edge of the binding strip is wrapped aboutthe bend in the side unit l6 and the end engaging edge of the bindingstrip continues to be bent widthwise into the plane of the end piece 26by the guide and work support. As a result, the r edge of the bindingstrip engaging the end of the frame is forced against its naturalrigidity into an edgewisely bent position, producing an accumulation offullness in the end face engaging edge of the strip which must beabsorbed before the strip will lie in flattened condition against theface of the end piece along a junction of the corner.

To give a smooth, close fitting and finished appearance to the bindingstrip about a corner junction of a bag frame member in using the machineof the Bates et al. patent, a V notch is cut in one edge of the stripwith an angle of sufficient width to take up the fullness at thejunction. Cutting a V notch necessitates stopping the machine andrequires a separate manual operation. Furthermore, the notch, eventhough the edges are brought snugly together, forms a line of weaknessin the binding strip and is fully effective in taking up the fullnessonly when the bend in the side of the bag is relatively abrupt. As amatter of precaution to prevent excessive wear, the line of the cut isusually reinforced witha rigid-cap of metal or heavy plastic.

In order to cause the end engaging edge of a binding strip to lie inrelatively smooth, flattened condition along the junction of the endcorner and the bend in. the side unit of a bag frame member, in spite ofthe fullness along the end engaging edge at the. junction while sewingboth strip edges with a single scam, the work support 2 in the machineof the present invention is so constructed that, along the end corner atthe junction where the fullness tends to accumulate it will be broken upautomatically into measured quantities of such small size betweensuccessive stitches that the thread in the stitches, while being drawntightly to set each stitch, will press out and flatten the individualquantities collect! ed anddistribute them with smooth-fitting conformityagainst the end face of the bag frame member. To measure the quantity offullness in the binding strip and to limit the amount taken up by eachstitch, the upper surface of the work support is formed with a recess 36(see Figs. 6, 9 and 10) of tapering depth, the greatest depth beingalong that portion engaged by the extreme edge of the strip.

The strip collecting recess 36 is of a width substantially the same asthe length of a stitch and one margin of the recess is locatedapproximately in line With the path of the needle and the other marginin line with the work penetrating path of the awl. the recess are suchthat, when the awl penetrates the work, it engages the binding strip atthe leading margin of the recess, looking in the direction of feed, andcarries the strip together with any fullness collected in the recess, asshown in Fig. 10, into line with the needle path. After the needleenters the perforation formed in the strip by the awl and the stitch isinserted and set, the tension of the sewing thread, together with thepressure of the bag frame exerted by the horn against the work support,will tend to ffatten and smooth out the surplus length of the bindingstrip edge between the previously formed and last formed stitches. Thefullness along the edge of the strip thus is retained by each stitch andis not allowed to work its way in either direction along the edge of thestrip or to accumulate in any such quantity as will render the workunsightly or cause the strip to be forced out of the needle and awlpaths.

With binding strips of different materials, the quantity of fullnesswhich may be measured by the recess and flatmned out successfullybetween successive stitches will vary somewhat. Accordingly, with morerigid and incompressible ma terials, a recess of greater depth may berequired than with softer, more flexible materials.

In order to enable binding strips of different qualities to be employedin the present machine Without complicated adjustments, the work support2 is provided with circular seats within which are fitted a pair ofremovable throat plates in the form of disks 38 and 40, the disk 38being of sufficient diameter to accommodate the entire length of therecess 36. With removable disks of this construction, any one of aseries of disks having recesses of different depths or widths may beemployed by removing one disk and substituting another. The removabledisks are also useful to provide slots 39. M of different lengths fordifferent lengths of stitch. When the length of stitch is to be changed,the lengths of the slots indicated at 39, 4! also should be changed,since it is necessary to support the b ing strip and the faces of thebag being operated upon as close as possible to the points of Thelocation and shape of entry in the work of the needle and awl to avoidthe possibility of the needle and awl escaping from the edge of thestrip or breaking through the faces of the bag from which they emerge insuch a way as to form splinters or excessively large chips. In someinstances, it is desirable to adjust the awl to prevent its penetrationentirely through the edge of the binding strip engaging the end piece ofthe bag, thus avoiding any possibility of forming splinters orexcessively large chips. When s adjusted, the leading edge of the recess36 is located sufiiciently behind the awl in the direction of feed toinsure complete support for the edge of the binding strip. In this way,the awl can be set to penetrate part way into the binding strip withoutemerging from the other side, thereby holding the binding strip fromslipping along the end surface of the bag while being fed.

The guide for bending the strip widthwise and directing it with itsedges intersecting the needle and awl paths comprises a pair of similarU-shaped spring clips 42 and 44 surrounding the outer edges of the worksupport 2 and being fastened to slide blocks 46 and 48 mounted insuitably shaped guideways in the work support. The free end of each cliphas a pair of rightangle tangs 56 entering slots 52 in the surfaces ofthe work support. The clips are so located that the tangs act on theextreme edges of the binding strip to force the edges into angularlybent relation within the angle between the surfaces of the work support.To adjust the positions of the clips for different widths of bindingstrip, slots in the side of the slide blocks 46'and 48 are engaged bycollars on a pair of adjusting screws 54 threaded into the edges of thework support.

Referring to Fig. 7, the binding strip is led beneath portions of eachclip projecting beyond the tangs, the edges of the strip beingcompressed by the tangs. While the work is being fed, the pressure ofthe binding strip is released by the resiliency of the clips and movesfreely along the projecting portions of the clips. At the end of eachfeeding movement when the horn clamps the work against the work support,the projecting portions of the clips are forced against the bindingstrip by the pressure of the bag frame, to grip the binding strip andclamp it against lengthwise movement. Clamping the binding strip in thisway is advantageous particularly while sewing around the junction of acorner in a bag frame member, since it avoids slippage of the stripbetween the times when each stitch is completed and when the awlpenetrates the strip.

In-order to provide a tight joint between the main body and the covermembers of a completed bag frame, the edges of each member are beveledin opposite directions. Ordinarily, the cover member !4 is formed withan outwardly flaring bevel 56, best shown in Fig. 14, and the main bodymember i2 of the bag frame has a complementary inwardl flaring bevel 58,as in Fig. 1. In starting a sewing operation on a cover member, it isdesirable to insert the initial stitch as close as possible to theextreme beveled edge of the member, but the pressure of the horn 4against the outwardly flaring bevel 56 has a. tendency to cause the edgeof the member to slip out of operating position in the machine. To avoidthis difficulty, according to a feature of the invention, the end of thehorn carries a presser tip in the form of a. roughened, one-wayrotatable ball 60, the rotary 'axis of which is substantially parallelto the bag side engaging surface of the work support 2. The ball 60rotates on a spindle 62 extending from the end of a short lever 64fulcrumed between spaced flanges of the horn on a pivot 66 substantiallyparallel to the direction of work feed. When the ball 60 engages thesurface of the bevel 56 of the bag member, as in Fig. 14, it holds thebag member and prevents it from slipping. When the sewing operation isstarted, the bag member moves to the dot-dash position, raising the ball60 to the level of the inner surface of the bag member, the fullthickness of the sheet comprising the member being carried between thework support and the ball. When the bend in the side unit of the bagmember is reached, there may be a further tendency for the bag member toslip beneath the ball while sewing around the bend of the corner. Withthe ball mounted for rotation in one direction only, a more uniformspacing occurs between successive stitches while sewing the bend in thecorner, and less effort is required as compared to that needed in priormachines in turning the bag frame member as the sewing progresses aroundthe bend.

The end of the lever opposite the ball 60 extends within a hollowportion of the horn and is engaged by a spring 68 surrounding a screw 10passing through the outer walls of the hollow horn portion and throughaslot in the end of the lever. In starting a new seam, the work clampingpressure of the horn forces the ball 60 axially of the spindle 62against the inner face of the bag end and the side of the ball pressesagainst the side unit of the bag frame member, the lever 64 moving aboutits pivot 65 to enable the ball to clamp the parts with equal pressuresand to accommodate its position to variations in thicknesses of theparts clamped. One purpose of the spring 68 is to centralize theposition of the lever when the presser tip on the horn is disengagedfrom the bag frame parts, the spring forcing the lever against the lowerflange of the horn. Another purpose is to force the ball upwardly duringwork feed firmly against the internal face of the bag end piece 26, thusreducing the chance for downward slippage of the bag when released fromthe clamping pressure of the horn.

To cause the ball to rotate in one direction only, a one-way clutch isformed between the spindle 62 and the bearing surface inside the ball60. The one-way clutch consists of a slot 12 having a wedging surfacecut in the side of the spindle 62 and a ball 14 mounted within the slotin such a way as to become wedged when force is applied, tending torotate it in one direction, and to be released when force is applied,tending to rotate it in the opposite direction, the wedging surfacebeing arranged to cause the ball 14 to be released when rotated in thedirection of feed only. The work engaging ball 60 is formed with asmooth area 13 at its end which engages the end of the bag unit, so thatthe smooth end of the ball 66 may slide freely along the inner face ofthe bag end during work feed.

The ball 60 is made with the same or a substantially smaller radius thanthat of the surface within the bends of the bag side unit, so that itwill fit Within the bends of the side unit but not too far within thejointed corners. When sewing about the junction of the jointed endcorners in a bag frame member, the ball 60 acts as a pivot about whichthe bend in the side unit swings, thus causing movement of the bagmember to be accomplished smoothly and in unison with the linear workfeeding movements.

Where bends in a side unit of extremely small radius of curvature areencountered, it is desirable to arrange the mounting for the horn insuch a way that it will enable the work engaging end of the horn toswing freely from one side to the other of the sewing point in thedirection of feed. Thus, when a bag member with a side unit having bendsof radius of curvature relatively smaller than that of the ball 60 isbeing sewed, the ball may be'pressed to one side or the other, asrequired in turning the bag frame member on the work support. For thebest operating conditions, however, the ball should be smaller than thecurvature of the bends, as .previously described.

The mounting for the horn, in the illustrated machine, comprises a block,I-6 having a dovetail II clamped within a dovetailed groove I8 in theupper end of the horn (see Fig. 3). The block "I6 is rotatably mountedon a vertical spindle 88 secured between the arms of a U-shaped member82 which, in turn, is rotatable on a horizontal shaft 84 the forward endof which is made fast to a'perforated horn supporting block 86.Extending through the perforation of the block 86 is a fixed supportingshaft 88 clamped adjacent its ends within collar portions 90 of themachine frame having downwardly extending bracing arms 92 bolted to theframe. The shaft 88 extends parallel to the direction of feed so thatrotary movement of the horn supporting block 86 on the shaft causes theball 68 at the lower end of the horn to move toward and from the worksupport. from work clamping position, the right-hand collar 90 isstraddled by the divided hub of a downwardly extending armof anactuating lever 94 rotatably mounted on the shaft 88 and connected tothe block 86 through an adjusting bolt 96 passing in a directionparallel to the supporting shaft 88 through an opening in the block 86and having check nuts for clamping and moving the parts to suitablyadjusted relation along the shaft 88. The arm of the lever 94-and theblock 86 also are further clamped to the bolt 96 by screws 98 in the armand block, respectively.

When the bolt 96 is released and rotated, the position of the block 88may be changed along the shaft 88 to bring the lower work engaging endof the horn into the desired alinement with the work support and stitchforming devices.

To enable the work engaging end of the horn to swing yieldingly in thedirection of work feed, the U-shaped member 82 is formed with a downwardly opening passage (Fig. 4) within which is received aspring-pressed plunger I08 the lower end of which engages a fiat surfaceon a collar I02 secured to the rearward end of the horizontal shaft 84.When the end of a corner is reached in sewing a bag frame member, ifthecorner is of smaller radius than will enable the ball 68 to fitconveniently within it, the ball will be pressed To actuate the horntoward and to one side of the point of sewing operation, causing on theflat side of the collar to draw the horn mounting back into itsoriginalalined position.

To actuate the horn and its supporting block 86 to unclamp the work forfeeding, the downwardly extending arm of the actuating lever 94 isconnected through a link I04 to a mechanism in the machine which isemployed for actuating the presser foot toward and from the work whenthe machine is fitted for ordinary shoe sewing work as in the Ashworthpatent above referred to. This mechanism includes a floating lever I06to which the link I84 is connected, a presser foot look I 88 having ascrew threaded rod IID pivotally connected to the floating lever I86,and

link H2 also connected to the floating lever I86 and to a cam actuatedlever II4. To urge the horntoward work clamping position, an upwardlyextending arm of the lever 94 is pivotally connected to the upper end ofa rod H6 passing loosely through a guide plate II8 fastened to themachine frame and, surrounding the rod I I6, is a coiled spring I28acting between the guide plate and a check nut I22 on the rod II6.

As a convenient means for adjustably mounting the work support andenabling a bag corner to be presented in symmetrical relationship to thepaths of the needle and awl, the work support has secured to it anarcuate plate I24 (Fig. 7) slidably mounted within a correspondinglyshaped guideway formed in a slotted bracket I26 made fast to the machineframe. Through the slot in the bracket I26 are a pair of clamp screws I28 threaded into the arcuate plate I24 which, when loosened, permitmovement of the plate in the guideway of the bracket. The curvature ofthe arcuate plate and the location of the guideway are such that, duringmovement of the plate in the bracket, the work support will swing aboutthe point of intersection between the needle path and a line bisectingthe angle formed by the supporting surfaces of the work support. As aresult, when the position of the work support is adjusted, the angularrelation of the needle path and the faces of the bag unit only will bechanged without relative bodily movement of the position of the bagtoward and from the needle path.

Although the invention has been illustrated and described as beingembodied in a machine for sewing a binding strip to the corners of alight weight bag or suitcase composed of thin veneer or plywood framemembers each having a single sheet bent into a side unit, certainfeatures are equally applicable to machines for attaching binding stripsby means other than sewing to bag frame members, whether bent or'jointed and whether composed of wood veneer or other substances.

The nature and scope of the invention having been indicated and aparticular embodiment having been specifically described, what isclaimed 1. In a machine for attaching a binding strip to the frame of abag or like article constructed with a side unit having an angularlybent portion and an end piece connected along its edge to form a jointedcorner with the side unit, the

combination with attaching devices, a work support having angularlydisposed surfaces to engage a jointed corner externally, and means forguiding a binding strip with its edges in angular relation to each otheragainst the faces of the corner to enable attachment of the strip tosaid faces, of means acting on the binding strip at the point ofattachment to distribute evenly the fullness along the end pieceengaging edgeof the strip a while the other angularly disposed edge ofthe stri is being wrapped about a bend in the side unit of the bagframe.

2. In a machine for sewing a binding strip to the frame of a bag or likearticle constructed with a side unit having an angularly bent portionand an end piece connected along its edge to from a jointed corner withthe side unit, the combination with a needle, a work support havingangul0 larly disposed surfaces to engage a jointed corner externallywith the angularly disposed faces of the side unit and adjacent endpiece at an inclination to and intersecting the needle path, and

' means for guiding a binding strip with its edges in angular relationto each other against the faces of the corner to enable sewing the stripto said faces with a single seam, of means acting on the binding stripat the point of needle operation to distribute evenly the fullness alongthe end 1 piece engaging edge of the strip while the other angularlydisposed edge of the strip is being wrapped about a bend in the sideunit of the bag frame.

3. In a machine for sewing a binding strip to the frame of a bag or likearticle constructed with a side unit having an angularly bent portionand an end piece connected along its edge to form a jointed corner withthe side unit, the combination with a needle, a work support havingangu- 73 larly disposed surfaces to engage a jointed corner externallywith the angularly disposed faces of the side unit and adjacent endpiece at an inclination to and intersecting the needle path, and meansfor guiding a binding strip with its edges in angular relation to eachother against the faces of the corner to enable sewing the strip to saidfaces with a single seam, of collecting means for causing a limitedaccumulation of fullness along the end piece engaging edge of the striptoggo be flattened by each successive stitch while the other angularlydisposed edge of the strip is being wrapped about a bend in the sideunit of the bag frame.

t. In a machine for sewing a binding strip tothe frame of a bag or likearticle constructed with a side unit having an angularly bent portionand an end piece connected along its edge to form a jointed corner withthe side unit, the combination with a needle, a work support having angularly disposed surfaces to engage a jointed corner externally with theangularly disposed faces of the side unit and adjacent end piece at aninclination to and intersecting the needle path, and means for guiding abinding strip with its edges in angular relation to each other againstthe faces of the corner to enable sewing the strip to said faces with asingle seam, of a recess in the work support for gathering a limitedaccumulation of fullness along the end piece engaging edge of the stripbetween successive stitches while the strip is being wrapped about abend in the side unit of the bag frame.

5. In a machine for sewing a binding strip to the frame of a bag or likearticle constructed with a side unit having an angularly bent portionand an end piece connected along its edge to form a jointed corner withthe side unit, the combination with a needle, a work support havingangularly disposed surfaces to engage a jointed corner 70 externallywith the angularly disposed faces of the side unit and adjacent endpiece at an inclination to and intersecting the needle path, and meansfor guiding a binding strip with its edges in angular relation to eachother against the faces of the corner to enable sewing the strip to saidfaces with a single seam, of a recess in the work support for gatheringa limited accumulation of fullness along the end piece engaging edge ofthe strip between successive stitches while the strip is being wrappedabout a bend in the side unit of the bag frame, one margin of saidrecess being located in line with the needle path to prevent thefullness gathered from working its way along the strip after a stitch isinserted.

6. In a machine for sewing binding strips to the frame of a bag or likearticle constructed with a side unit having angularly bent portions andan end piece connected along its edges to form jointed corners with theside unit, the combination with a needle, a work feeding awl, a worksupport having angularly disposed surfaces to engage a jointed cornerexternally with angularly disposed faces of the side unit and adjacentend piece at an inclination to and intersecting the needle and awlpaths, and a binding strip guide for directing the strip with its edgesin angular relation to each other against the faces 'of the corner toenable sewing the strip to both said faces with a single seam, of arecess in the work support for gathering a limited accumulation offullness along the end piece engaging edge of the binding strip betweensuccessive stitches while the strip is being wrapped about a bend in theside unit of the bag frame, one margin of the recess being located inline with the needle path and the opposite margin of the recess beinglocated in line with the work penetrating path of the awl to prevent thefullness from working its way in either direction along the gatherededge of the strip after the awl penetrates the strip.

7. In a machine for sewing binding strips to the frame of a bag or likearticle constructed with a side unit having angularly bent portions andend pieces connected along their edges to form jointed corners with theside unit, the combination with a needle, a work support engaging ajointed corner with angularly disposed faces of the side unit andadjacent end piece at an inclination to and intersecting the needlepath, and means for guiding a binding strip with its edges in angularrelation to each other against the faces of the corner to enable sewingthe strip to said faces with a single seam, of a throat plate rean endpiece connected along its edge to form a jointed corner with the sideunit, the combination with a needle, a work support having angularlydisposed surfaces to engage a jointed corner externally with theangularly disposed faces of the side unit and. adjacent end piece at aninclination to and intersecting the needle path, means for guiding abinding strip with its edges in angular relation to each other againstthe faces of the corner to enable sewing the strip to said faces with asingle seam, and a horn for pressing the jointed corner of the frameagainst the work support, of a presser tip rotatably mounted at the endof the horn comprising a ball of substantially smaller radius than thecurvature inside the bend of the side unit.

9. In a machine for sewing a binding strip to the frame of a bag or likearticle constructed with a side unit having an angularly bent portionand an end piece connected along its edge to form a jointed corner withthe side unit, the combination with a needle, a work support havingangularly disposed surfaces to engage a jointed corner externally withthe angularly disposed faces of the side unit and adjacent end piece atan inclination to and intersecting the needle path, means for guiding abinding strip with its edges in angular relation to each other againstthe faces of the corner to enable sewing the strip to said faces with asingle seam, and a horn for pressing the jointed corner oftheframeagainst the work support, of a 'presser tip comprising a ball mountedfor rotation at the end of the horn about an axis parallel with the sideunit.

i 10. In a machine for sewing a binding strip to the frame of a bag orlike article constructed With a side unit having an angularly bentportion and an end piece connected along its edge to form a jointedcorner with the side unit, the combination with a needle, a work supporthaving angularly disposed surfaces to engage a jointed corner externallywith the angularly disposed faces of the side unit and adjacent endpiece at an inclination to and intersecting the needle path, means forguiding a binding strip with its edges in angular relation to each otheragainst the faces of the corner to enable sewing the strip to saidfaceswith a single seam, and a horn for pressing the jointed corner ofthe frame against thework support, of a presser ti comprising a ballmounted for rotation at the end of the horn about an axis parallel withthe side unit and formed with a roughened band about its side unitengaging portion and a smooth end surface engaging the end piece of thebag frame.

11. In a machine for sewing a binding strip to the frame of a bag orlike article constructed with a side unit having an angularly bentportion and an end piece connected along its edge to form a jointedcorner with the side unit, the combination with a needle, a work supporthaving angularly disposed surfaces to engage a jointed corner externallywith the angularly disposed faces of the side unit and adjacent endpiece at an inclination to and intersecting the needle path, means forguiding a binding strip with its edges in angular relation to each otheragainst the faces of the corner to enable sewing the strip to said faceswith a ingle seam, and a horn forpressing the jointed corner of theframe against the work support, of a presser tip comprising a ballmounted for rotation at the end of the horn about an axis parallel withthe side unit and formed with a roughened band about its side unitengaging portion and a smooth end surface engaging the end piece of thebag frame, and means for preventing rotation of the ball in a directionopposite to that imparted by the feeding movement of the work to assistin sewing the bag frame along portions of successively increasingthickness.

12. In a machine for sewing a binding strip to the frame of a bag orlike article constructed with a side unit having an angularly bentportion and an end piece connected along its edge to form a jointedcorner with the side unit, the combination with a needle, a work supporthaving angularly disposed surfaces to engage a jointed corner externallywith the angularly disposed faces of the sideunit and adjacent end pieceat an inclination to and intersecting the needle path, means for guidinga binding strip with its edges in angular relation to each other againstthe faces of the corner to enable sewing the strip to said faces with asingle seam, a horn for pressing the jointed corner of the bag frameagainst the work support, a spindle on the horn, and a ball rotatablywith aside unit having angularly bent portions and an end piececonnected along its edges to form jointed corners with the side unit,the combination with stitch forming and Work feeding devices, means forsupporting a jointed corner with angularly disposed faces of the sideunit and adjacent end piece at an inclination to and intersecting thepaths of the stitch forming devices, a horn for pressing the jointedcorner of the frame against the supporting means, and a substantiallyhorizontal shaft on which the horn is mounted for rotation to enable thework engaging end of the horn to move in the direction of feed, of meansfor maintaining the horn in a central position opposite the point ofoperation of the stitch forming devices comprising a flat sided collaron the shaft and a spring-pressed plunger connected with the hornengaging the flat side of the collar.

14. In a machine for sewing a binding strip to the frame of a bag orlike article constructed with a side unit having angularly bent portionsand an end piece connected along its edges to form jointed corners withthe side unit, the combination with stitch forming and work feedingdevices and means for supporting a jointed corner with angularlydisposed faces of the side unit and adjacent end piece at an inclinationto and intersecting the paths of the stitch forming devices, of movableguide clips actuated to clamp the binding strip during formation of eachstitch and to release the strip during feeding movements of the bagframe and strip.

15; In a machine for sewing a binding strip to the frame of a bag orlike article constructed with a side unit having angularly bent portionsand an end piece connected along its edges to form jointed corners withthe side unit, the combination with stitch forming and work feedingdevices and means for supporting a jointed corner with angularlydisposed faces of the side unit and adjacent end piece at an inclinationto and intersecting the paths of the stitch forming devices, of clampclips formed of yielding sheet metal with right angle tangs engaging theedges of the binding strip arranged to be compressed by the pressure ofthe bag frame on the work support to clamp the binding strip againstmovement.

16. In a machine for sewing a binding strip to the frame of a bag orlike article constructed with a side unit having angularly bent portionsand an end piece connected along its edges to form jointed corners withthe side unit, the combination with stitch forming and work feedingdevices and means for supporting a jointed corner with angularlydisposed faces of the side unit and adjacent end piece at an inclinationto and intersecting the paths of the stitch forming devices, of clampclips formed of yielding sheet metal with right angle tangs engaging theedges of the binding strip arranged to be compressed by the pressure ofthe bag frame on the work support to clamp the binding strip againstmove.

ment, and movable slides on which the clips are mounted for movementtransversely of the direction of work feed for adjustably fittingbinding strips of different widths,

17. In a machine for applying a binding strip to the frame of a bag orlike article constructed with a side unit having an angularly bentportion and an end piece connected along its edges to form jointedcorners with the side unit, the combination with attaching devices, aWork support having angularly disposed surfaces to engage a jointedcorner externally, means for guiding a binding strip with its edges inangular relation to each other against the faces of the corner to enableattachment of the strip to said faces with a single seam, a horn, and apresser tip on the horn engaging the bag frame internally, of a mountinglever at the end of the horn for the presser tip arranged to fulcrumabout an axis parallel to the direction of work feed to cause the tip toengage angularly disposed internal faces of the bag frame withsubstantially equal pressures.

' 18. In a machine for applying a binding strip to the frame of a bag orlike article constructed with a side unit having an angularly bentportion and an end piece connected along its edges to form jointedcorners with the side unit, the combination with attaching devices, awork support having angularly disposed surfaces to engage a jointedcorner externally, means for guiding a binding strip with its edges inangular relation to each other against the faces of the corner to enableattachment of the strip to said faces with a single seam, a horn, and apresser tip engaging the bag frame internally, of a mounting lever atthe end of the horn for the presser tip arranged to fulcrum about anaxis parallel to the direction of work feed to cause the tip to engageangularly disposed internal faces of the bag frame with sub stantiallyequal pressure, and yielding means for centralizing the position of thelever while the presser tip is disengaged from the bag frame.

19. In a machine for sewing a binding strip to the frame of a bag orlike article constructed with a side unit having an angularly bentportion and an end piece connected along its edge to form a jointedcorner of the frame against the work support, of a presser tipcomprising a ball mounted for rotation at the end of the horn about anaxis parallel with the side unit and formed with a roughened band aboutits side unit engaging portion and a smooth end surface engaging the endpiece of the bag frame, and means for urging the roughened band of theball yieldingly against an internal face of the bag frame, comprising aspring-pressed lever on the horn for rotatably supporting the ball.

20. In a machine for sewing a binding strip to the frame of a bag orlike article constructed with a side unit having angularly bent portionsand an end piece connected along its edges to form jointed corners withthe side unit, the combination with stitch forming and work feedingdevices, means for supporting a jointed corner with angularly disposedfaces of the side unit and adjacent end piece at an inclination to andintersecting the paths of the stitch forming devices, and a horn forpressing the jointed corner of the frame against the work support, ofmounting mean for the horn, a shaft for supporting the mounting means toenable the horn to be moved away from the work support during work feed,an actuating lever rotatable on the shaft, and an adjusting boltconnecting the mounting means to the actuating lever for changing theposition of the horn mounting means in the machine along the supportingshaft to bring the work engaging end of the horn into a desiredalinement with the work support and stitch forming devices.

21. In a machine for sewing a, binding strip to the frame of a bag orlike article constructed with a side unit having angularly bent portionsand an end piece connected along its edges to form jointed comers withthe side unit, the combination with stitch forming and work feedingdevices, means for supporting a jointed corner with angularly disposedfaces of the side unit and adjacent end piece at an inclination to andintersecting the paths of the stitch forming devices, and a horn forpressing the jointed corner of the frame against the work support, ofmounting means for the horn, a shaft extending parallel to the directionof work feed for supporting the mounting means for movement to enablethe horn to release the work during work feed, an actuat ing leverrotatable on the shaft, an adjusting bolt arranged parallel to thesupporting shaft between the mounting means and the actuating lever forchanging the position of the horn mounting means along the supportingshaft, and means for clampin the bolt after adjustments are made.

OTTO R. HAAS.

